Hemp breaking machine



ug. 16, 1938. C. CHRISTINSEN ET AL &

HEMP BREAK ING MACHINE Filed Nov. 24, 1936 Patented Aug. 16, 1938 PATENT oFFICE 2,127,157 HEMP' BREAKING MACHINE Christian Christansen, OSlo, and Gustav Otto Karl Riisoh, Mandal, Norway Application November 24, 1936, 'Serial No. 112,566

' In Norway November' 27', 1935 5 Claims.- (Cl. 19-128) The present invention relates to machines for breaking hemp, such machines usually compris ing a series of horizontal needle beltsarranged in tandem, and arrangements by means of which the hemp at the delivery end of a needle belt is pushed upwards out of engagement With the needles, so that theneedles, during the movement of the needle holders or bars around the needle belt Wheels, may be retained in radial position and the holders consequently may be fixed rigidly to the chains, whereby the controlling mechanism for the needle holders, Which otherwise is necessary during their movement around the chain Wheels, becomes superfiuous and the speed of the needle belts may be increased considerably.

Subject matter of the present invention is an arrangement of the said kind which can be built into the breaking machine itself. The arrangement is in the main characterized by the use of hemp removing plates or slides rotating synchronously With the chain Wheels of the needle belt at or near the delivery end of the belt, and which during the rotation are controlled in such a way that they, preferably when passing the Vertical plane through the aXis of the chain Wheels, are moved outwardly between two needle holders, thereby pushing the hemp out of engagement With the needles.

The said removal plates or slides preferably are guided in radial grooves or slots in discs or the like rotating co-aXially with the chain Wheels of the needle belt and are during the rotation controlled by means of guides arranged eXcentrically to the aXis of the chain Wheels, with which guide projections or the like on the plates or slides engage. The said guides suitably may also be Circular, but may be shaped otherwise, for instance in an irregular curve, giving the plates or slides a desired irregular motion in the radial direction during the rotation. The guides are secured to the frame of the machine in any suitable manner and are preferably adjustable by rotation about the aXis of the chain Wheels of the needle belt.

The device can be used for all of the needle belts of the machine, whereby the hemp which by means of the plates or slides is removed from the needles easily can be delivered to a succeeding needle belt. Any desired number of needles belts for instance 3 or more therefore may be arranged in series, whereby the breaking or Spreading of the hemp may be divided upon more places and be carried out continuously in one operation, whereby the spreading in each individual needlebelt and thereby the stress on the needles may be reduced and the individual belts be made shorter than in the machines previously used. As a result of this distribution of the work the spreading becomes more even and the product more uniform. Owing to the fact that the needles retain a radial position during the movement around the chain Wheels and that the needle holders therefore can be rigidly connected to the chains, the speed of all belts and thereby the capacity of the machine can be further increased.

The distance between the needles in the needle holders and the distance between the holders in the needle belts preferably decrease for successive belts in the series.

In the drawing Fig. 1 shows a device according to the invention, looking in the aXial direction from the Centre of the machine, and Fig. 2 a vertcal section through the axis of one of the chain Wheels of a needle belt and the device according to the invention. Fig. 3 shows diagrammatically a series of needle belts each provided with the hemp removal device according to the invention.

l is the frame of the machine With bearings 2, 2 for the shaft 3 of the chain Wheels 4, 4, over which the needle belt 5 runs. Secured to the shaft 3 are the discs 6, 6 With radial slots or grooves 1,

'l in Which the hemp removal plates 8, 8 slide during their rotation, being controlled by means of the projections 9, 9 which engage the Circular guide grooves IO, lu arranged excentrcally to the shaft 3 in the stationary discs Il, ll. The removal plates 8 thereby will, when passing the 4 Vertical plane through the aXiS of the chain Wheel, be moved outwards between the two needle holders to such height that their outer edge come up to or approximately to the height of the ends of the needles whereby the hemp is pushed out of engagement With the same.

The guides may, as mentioned above, be shaped otherwise so that the removal plates come in their outmost position under another angle. Instead of slots as shown in the drawing, other controlling elements may be used, for instance a System of levers.

In the embodiment shown in the drawing a hemp removal plate is moved outwardly in the space between each two needle holders, but, especially for needle belts With a small distance between the holders, a removal plate or slide may be moved outwardly in every second or third space between needle holders.

In Fig. 3 A is a pair of rollers through which the hemp is delivered to the machine which has 3 needle belts B, C and D. All belts have at their delivery end a hemp removal device according to the invention and the needle holders are rigidly fixed to the chains. Each belt travels at a higher velocity than the preceding belt as indicated With the arrows. The completely spreaded hemp is delivered to the rollers E.

Having now particularly described and ascertained the nature of Our Said invention and in What manner the same is to be performed, We declare that What We claim is:

1. In a hemp breaking machine, a needle belt having spaced needle holders, Wheels for' supporting and driving said needle belt, and a device for removing the hemp from said needle belt at the delivery end of the same, said device comprising a plurality of hemp removal members, mounted in supports connected to and rotatable With the said belt driving Wheel at the delivery end of said needle belt, and means for causing radial movements of each Said member during predetermined portions of its rotation, Said members being adapted to operate in the spaces between adjacent needle holders.

2. Apparatus as defined in claim 1, said hemp removal member supporting means comprising a pair of radially Slotted members connected to and rotatable With said belt driving Wheel.

3. Apparatus as defined in claim 1, said means for causing radial movements of Said hemp removal members comprising guide means in the form of a. closed curve eccentric to Said belt driving Wheel, and guide engaging means carried by said hemp removal members.

4. In a hemp breaking machine, a plurality of needle belts arranged in series, each Said belt having spaced needle holders, Wheels for supporting and driving said needle belts, and a device associated With each said needle belt forremoving the hemp therefrom at the delivery end of the same, said device comprsing a plurality of hemp removal members, mounted in supports connected to and rotatable With the said belt driving Wheel at the delivery end of said needle belt, and means for' causing radial movements of each said member during predetermined por tions of its rotation, said members being adapted to operate in the spaces between adjacent needle holders.

5. Apparatus as defined in claim 4, the needle holders of each successive needle belt being more closely spaced longitudinally of said belt than the .needle holders of the preceding belt.

CHRISTIAN CHRISTIANEN. GUSTAV O'ITO KARL RUSCH. 

